One mole of a solute A is dissolved in a given volume of a solvent. The association of the solute take place as follows:
nA ⇌ Aₙ
If α is the degree of association of A, the van't Hoff factor i is expressed as:
a. i = 1 - α
b. i = 1 + α/n
c. i = 1 - α + α/n/1
d. i = 1